<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>盒子模型的属性</title>
    <style>
        div{
            width: 50px;
            height: 50px;
            background-color: lightgrey;
            /* 内边距 */
            padding-top: 10px;
            /* 边框 */
            border: 3px solid lightgreen;
            /* 外边距 */

        }
    </style>
</head>
<body>
    <!-- 内容的宽高 内边距 外边距 边框 -->
     <div>
        tan
     </div>
     <div>
        jin
     </div>
</body>
</html>